Proline/Serine Rich Coiled Coil protein 1 (PSRC1)

PSRC1 encodes a proline-rich protein. Studies of the related mouse gene suggest that this gene is regulated by p53 and may participate in p53-mediated growth suppression. Alternatively spliced transcript variants encoding different isoforms have been described.

The deduced 333-amino acid protein shares 68.2% identity with mouse Dda3, with highest conservation in the N-terminal half. Both mouse and human DDA3 are rich in serine and proline and contain a coiled-coil domain, and 3 of 6 PxxP motifs in mouse Dda3 are conserved in human DDA3. PCR analysis revealed variable DDA3 expression in all human tissues examined except skeletal muscle. Highest expression was detected in fetal thymus and adult brain.